Firearm handguard



FIG. 1 is a perspective view of the firearm handguard embodying the new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

FIGS. 1-7 show features of a firearm handguard in broken lines. The broken lines in the figure drawings depict unclaimed portions of the handguard only and form no part of the claimed design. 

CLAIM The ornamental design for firearm handguard, as shown and described. 